fix: [select-dialog] Double-click to unable to open the file

[GongHeng2017]

When there are two choice boxes, double-click the file cannot be opened.

Log: fix issue
Bug: https://pms.uniontech.com/bug-view-261287.html

[deepin-ci-robot]

deepin pr auto review

关键摘要:

• 在FileDialog::FileDialog构造函数中移除了initEventsFilter()的调用，需要确认这是否是有意为之。
• initEventsFilter()函数被移除，但相关的代码逻辑仍然存在于FileDialog.cpp中。需要检查是否有其他部分在调用initEventsFilter()。
• onAcceptButtonClicked()函数被添加到了FileDialog类中，但没有相应的文档注释说明其用途。
• FileDialog::initEventsConnect()函数中的代码被移除，需要确认这是否会影响其他功能。

是否建议立即修改:

• 是，需要确保移除initEventsFilter()和initEventsConnect()函数调用是有意为之，并且不会影响程序的正常功能。同时，添加的onAcceptButtonClicked()函数应该有相应的文档注释，以便其他开发者理解其用途。

[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: GongHeng2017, Johnson-zs

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[GongHeng2017]

/merge